Mathematics
Answer
(i) The factors of 4 are 1, 2 and 4.
The factors of 8 are 1, 2, 4 and 8.
The factors of 12 are 1, 2, 3, 4, 6 and 12.
Hence, the common factors of 4, 8 and 12 are 1, 2 and 4.
(ii) The factors of 10 are 1, 2, 5 and 10.
The factors of 30 are 1, 2, 3, 5, 6, 10, 15 and 30.
The factors of 45 are 1, 3, 5, 9, 15 and 45.
Hence, the common factors of 10, 30 and 45 are 1 and 5.
Related Questions
Write:
(i) the seventh multiple of 36
(ii) the even multiples of 9 less than 100
(iii) the odd multiples of 17 less than 150
(iv) the first 3-digit even multiple of 7
(v) the multiples of 6 between 40 and 80
(vi) the greatest 2-digit even multiple of 5
Find the common factors of:
(i) 20 and 28
(ii) 35 and 50
(iii) 56 and 120
Write all natural numbers less than 100 which are common multiples of 3 and 4.
(i) Write the odd numbers between 36 and 53.
(ii) Write the even numbers between 232 and 251.